Safety-envelop.



J. MIKA.

SAFETY ENVELOP.

APPLICATION FILED MAB..13, 1912.

' Patented July 23, 1912.

WITNESSES ATTORNEYS UNITED STATES PATENT OFFICE- JOSEPH MIKA, 0F PASSAIC, NEW JERSEY.

SAFETY-ENVELOP.

To all whom it may concern:

Be it known that I, JOSEPH MIKA, a subject of the Emperor of Austria-Hungary, residing at Passaic, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Safety-Envelops, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to safety envelops, and the object of my invention is to furnish an envelop with simple and effective means, in a manner as will be hereinafter set forth, for sealing the flap of the envelop, whereby the envelop cannot be surreptitiously opened.

I accomplish the above objects by two metallic devices that are secured to an envelop and the devices connected together in a manner that permits of the same being separated without injury to the envelop, consequently the act of rifiing an envelop can be easily detected. v

The invention will be hereinafter specifically described and then claimed, and reference will now be had to the drawing, wherein:

Figure 1 is a rear elevation of the envelop in an open position, Fig. 2 is a similar view showing the envelop closed and sealed, Fig. 3 is a cross sectional View of the envelop in an open position, Fig. 4 is a similar view of the envelop in a closed position, Fig. 5 is a perspective view of one of the metallic devices, and Fig. 6 is a similar view of the other metallic device.

The reference numeral 1 denotes a flat metallic plate made of malleable metal, said plate being rectangular in plan and having the ends thereof slitted, as at 2 to provide prongs 3 at the side edges of said plate. These prongs are bent whereby they can be pressed through the bottom flap 4 of an envelop 5 and then bent against the inner side of the bottom flap 4 to hold the plate 1 upon the outer side of said flap, as shown in Fig. 1. The plate 1 is provided with cen- Specification of Letters Patent.

Application filed March 13, 1912.

Patented July 23, 1912. Serial No. 683,423.

tral longitudinal parallel slits 6 and this slitted material is again slitted to form prongs 7 and these prongs are bent at right angles to the plate 1, as best shown in Fig. 5.

The reference numeral 8 denotes a keeper having lateral lugs 9. This. keeper is made of a single piece of metal and the lateral lugs 9 are secured to the inner side of the sealing flag 10 of the envelop 5 by straps 11 adhesively or otherwise secured. to the inner side of the flap 10. The keeper 8 is positioned upon the inner side of the sealing flap 10, whereby when said flap is closed. upon the rear side of the envelop, the keeper 8 will engage the plate 1 between the malleable lugs 7. A suitable instrument, as the blade of a knife, can be inserted under the flap 10 to force the malleable lugs 7 downwardly upon the keeper 8, thereby holding the keeper in engagement with the plate 1.

To open the envelop, the flap 10 must be injured or destroyed.

What I claim is In combination an envelop provided with a back and a sealing flap, a rectangularplate longitudinally slitted to form two pair of tongues extending through and clamped to the back, said plate positioned against the outer face of the back flap and having a centrally disposed opening, a prong projecting outwardly from each end wall of said opening, a keeper positioned against the inner face of said sealing flap, and straps for securing said keeper in position, said keeper adapted to enter said opening and said prong adapted to be swung into engagement with the keeper for maintaining the sealed flap closed.

In testimony whereof I afiix my signature in the presence oftwo witnesses.

JOSEPH MIKA.

Witnesses:

WILLIAM J ANEOZEK, JAN KORIET.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

